[Objective]The paper was to study the effects of mowing on nutrients of forage mulberry.[Method]With forage mulberry as the research object,the effects of mowing stubbles and mowing stages on nutrient content of forag...[Objective]The paper was to study the effects of mowing on nutrients of forage mulberry.[Method]With forage mulberry as the research object,the effects of mowing stubbles and mowing stages on nutrient content of forage mulberry were studied.[Result]With the increase of mowing frequency,the crude protein and crude ash content of forage mulberry decreased,but the crude fiber content increased,and the quality of forage mulberry decreased correspondingly.The crude protein content decreased most obviously from 25.78%in the first stubble to 21.63%in the third stubble.In the first and third stubble,the nutrients at 28±1 d after the last mowing were higher than that at 38±1 d after the last mowing.That is,with the growth of forage mulberry,the accumulated nutrients were also used for their own growth.[Conclusion]From the perspective of nutrient content,the forage mulberry mowed earlier has higher nutritional value and better palatability.展开更多
Ecological animal husbandry is an animal husbandry industry system integrating ecological benefit, economic benefit and social benefit. Breeding cycle is one of the main patterns of ecological animal husbandry develop...Ecological animal husbandry is an animal husbandry industry system integrating ecological benefit, economic benefit and social benefit. Breeding cycle is one of the main patterns of ecological animal husbandry development, but breeding cycle does not form a relatively closed cycle of endogenous resources. In recent years, forage value and ecological value of mulberry have made some progresses in different research areas and angles, but the thought and practice of both forage and ecological value of mulberry has not been systematically interpreted and researched. Based on the short board of animal husbandry development and the advan- tage of mulberry, animal husbandry and mulberry were complemented and fused, and relatively closed planting and raising ecological recycling pattern with mulberry as the axis was raised. Phased scientific research and production test data were obtained, and the problems and development suggestions were put forward in the following aspects ： selection of mulberry varieties with both forage and ecological value, cost control of mulberry with both forage and ecological value, quality and safety control system of forage mulberry, orientation of feeding value of forage mulberry.展开更多
以饲料桑树品种"青龙桑"(Morus alba cv Qinglong)为试验材料,通过水培方式研究了等氮条件下铵态氮和硝态氮两种形态氮源及其配比对桑树幼苗生长和光合特性的影响。结果表明,桑树幼苗在单一硝态氮或单一铵态氮条件下,植株高...以饲料桑树品种"青龙桑"(Morus alba cv Qinglong)为试验材料,通过水培方式研究了等氮条件下铵态氮和硝态氮两种形态氮源及其配比对桑树幼苗生长和光合特性的影响。结果表明,桑树幼苗在单一硝态氮或单一铵态氮条件下,植株高度、叶片数、叶片面积和根系长度均低于铵态氮和硝态氮配合施用,桑树叶片和根系生物量的变化也呈现类似趋势。铵态氮和硝态氮摩尔浓度比为50∶50和25∶75时桑树幼苗生长和生物量最高,而当铵态氮和硝态氮摩尔浓度比例为25∶75时桑树净光合速率(Pn)、气孔导度(Gs)和水分利用效率(WUE)高于其他处理,单一硝态氮或单一铵态氮处理降低了桑树叶片表观量子效率(AQE),提高了桑树叶片的光补偿点(LCP)。以上结果说明饲料桑树是一种偏硝性的植物,以铵态氮和硝态氮摩尔浓度比为(50∶50)～(25∶75)最适合。展开更多
基金Supported by Performance Incentive and Guidance Special Project of Scientific Research Institutes in Chongqing City(19537)Special Research and Development Project of Chongqing Rongchang Agriculture and Animal Husbandry High-tech Industry(20209)Diversification Development Research Office of Chongqing Modern Mountain Characteristic Benefit Agriculture(Sericulture)Technology System(18304).
文摘[Objective]The paper was to study the effects of mowing on nutrients of forage mulberry.[Method]With forage mulberry as the research object,the effects of mowing stubbles and mowing stages on nutrient content of forage mulberry were studied.[Result]With the increase of mowing frequency,the crude protein and crude ash content of forage mulberry decreased,but the crude fiber content increased,and the quality of forage mulberry decreased correspondingly.The crude protein content decreased most obviously from 25.78%in the first stubble to 21.63%in the third stubble.In the first and third stubble,the nutrients at 28±1 d after the last mowing were higher than that at 38±1 d after the last mowing.That is,with the growth of forage mulberry,the accumulated nutrients were also used for their own growth.[Conclusion]From the perspective of nutrient content,the forage mulberry mowed earlier has higher nutritional value and better palatability.
基金Supported by Agricultural Finance Project of Chongqing Agriculture Committee(15403)
文摘Ecological animal husbandry is an animal husbandry industry system integrating ecological benefit, economic benefit and social benefit. Breeding cycle is one of the main patterns of ecological animal husbandry development, but breeding cycle does not form a relatively closed cycle of endogenous resources. In recent years, forage value and ecological value of mulberry have made some progresses in different research areas and angles, but the thought and practice of both forage and ecological value of mulberry has not been systematically interpreted and researched. Based on the short board of animal husbandry development and the advan- tage of mulberry, animal husbandry and mulberry were complemented and fused, and relatively closed planting and raising ecological recycling pattern with mulberry as the axis was raised. Phased scientific research and production test data were obtained, and the problems and development suggestions were put forward in the following aspects ： selection of mulberry varieties with both forage and ecological value, cost control of mulberry with both forage and ecological value, quality and safety control system of forage mulberry, orientation of feeding value of forage mulberry.
文摘以饲料桑树品种"青龙桑"(Morus alba cv Qinglong)为试验材料,通过水培方式研究了等氮条件下铵态氮和硝态氮两种形态氮源及其配比对桑树幼苗生长和光合特性的影响。结果表明,桑树幼苗在单一硝态氮或单一铵态氮条件下,植株高度、叶片数、叶片面积和根系长度均低于铵态氮和硝态氮配合施用,桑树叶片和根系生物量的变化也呈现类似趋势。铵态氮和硝态氮摩尔浓度比为50∶50和25∶75时桑树幼苗生长和生物量最高,而当铵态氮和硝态氮摩尔浓度比例为25∶75时桑树净光合速率(Pn)、气孔导度(Gs)和水分利用效率(WUE)高于其他处理,单一硝态氮或单一铵态氮处理降低了桑树叶片表观量子效率(AQE),提高了桑树叶片的光补偿点(LCP)。以上结果说明饲料桑树是一种偏硝性的植物,以铵态氮和硝态氮摩尔浓度比为(50∶50)～(25∶75)最适合。
